Automatic tinning device for pipe fittings based on tin wire

Abstract

An automatic tinning device for pipe fittings based on tin wire comprises a workbench, on which a clamping assembly, a wire feeding assembly and a tinning assembly are arranged, the clamping assembly is provided with a fixed mold and a movable mold, at least one side of the fixed mold is provided with a wire feeding assembly and a tinning assembly, each tinning assembly is equipped with a set of wire feeding assemblies, the tinning assembly is provided with a clamping jaw unit, a first driving part, a second driving part and a third driving part, the clamping jaw unit is provided with three circumferentially evenly distributed clamping jaws, the first driving part drives the clamping jaw unit to move axially, the second driving part drives the clamping jaw unit to rotate, the third driving part drives the clamping jaws in the clamping jaw unit to synchronously contract or expand radially, the wire feeding assembly supplies tin wire to the clamping jaw unit, and the wire feeding direction of the wire feeding assembly is perpendicular to the axis of the clamping jaw unit. The present invention can improve the tinning efficiency and reduce the waste of raw materials.

Description

Technical Field

[0001] The invention belongs to the technical field of tinning of pipe fittings, in particular to an automatic tinning device for pipe fittings based on tin wire. Background Art

[0002] In the traditional tinning operation, liquid tin is used as the raw material to fill the grooves inside the pipe fittings. This operation method is not only an auxiliary operation, but also prone to defects such as sand holes, resulting in low processing efficiency. At the same time, due to the use of liquid filling, it is easy to cause waste of raw materials during the operation. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic tinning device for pipes based on tin wire, so as to solve the problems of low tinning efficiency, poor quality and waste of raw materials in the prior art.

[0004] The present invention provides an automatic tinning device for pipe fittings based on tin wire, and its technical solution to solve the technical problem includes a workbench, on which a mold clamping assembly, a wire feeding assembly and a tinning assembly are arranged, the mold clamping assembly is provided with a fixed mold and a movable mold, at least one side of the fixed mold is provided with a wire feeding assembly and a tinning assembly, each of the tinning assemblies is equipped with a set of wire feeding assemblies, the tinning assembly is provided with a clamping jaw unit, a first driving part, a second driving part and a third driving part, the clamping jaw unit is provided with three circumferentially evenly distributed clamping jaws, the first driving part drives the clamping jaw unit to move axially, the second driving part drives the clamping jaw unit to rotate, and the third driving part drives the clamping jaws in the clamping jaw unit to synchronously perform radial contraction or expansion, the wire feeding assembly supplies tin wire to the clamping jaw unit, and the wire feeding direction of the wire feeding assembly is perpendicular to the axis of the clamping jaw unit.

[0005] Preferably, the wire feeding assembly is provided with a wire feeding part and a wire winding and cutting part, the wire feeding part is provided with a servo motor, a roller, a screw rod, a guide rail, a wire feeding wheel group, a first clamping part and a second clamping part, the roller, servo motor, guide rail and wire feeding wheel group are all installed on a workbench, the first clamping part is slidably connected to the guide rail, the output end of the servo motor is connected to the screw rod, the other end of the screw rod is rotatably connected to the first clamping part, the screw rod rotates to drive the first clamping part to slide along the guide rail, the second clamping part is arranged parallel to the first clamping part and is fixed on the workbench at the end of the guide rail, the roller is wound with tin wire, and the free end of the tin wire passes through the wire feeding wheel group, the first clamping part and the second clamping part in sequence.

[0006] Preferably, the first clamping part is provided with a sliding seat, a cylinder, a guide block and a clamping head; the sliding seat is installed on a guide rail, the guide block is arranged along the conveying direction of the tin wire, the guide block is provided with a guide groove for passing the tin wire, and the clamping head is installed at the telescopic end of the cylinder and can be inserted into the guide groove; the second clamping part is provided with a fixed seat, a cylinder, a guide block and a clamping head; the guide block is fixed on the fixed seat, the guide block is provided with a guide groove, and the clamping head is connected to the telescopic end of the cylinder and can be inserted into the guide groove.

[0007] Preferably, the wire feeding wheel group is provided with an idler wheel and a clamping wheel. There are two clamping wheels and the outer edge surfaces of the two clamping wheels are arranged in close contact. The outer side walls of the two clamping wheels are provided with wheel grooves for passing the tin wire. The center line of the wheel groove after the two clamping wheels are connected is tangent to the idler wheel.

[0008] Preferably, the first driving part adopts a servo motor, or the second driving part adopts a servo motor or an AC motor, or the third driving part adopts a cylinder.

[0009] Preferably, the tinning assembly is provided with a first spindle portion, the first spindle portion is provided with a first spindle head, a spindle cylinder, a clamping unit coaxial with the spindle cylinder is installed in the spindle cylinder, one end of the clamping unit is provided with a cylinder for controlling the retraction or expansion of the clamping jaw, the tinning assembly is also provided with a translation motion assembly, and the movement direction of the translation motion assembly is parallel to the wire feeding direction.

[0010] Preferably, the wire feeding assembly is also provided with a wire winding positioning unit; the wire winding positioning unit is provided with a second main shaft portion, the second main shaft portion is provided with a mounting seat and a second main shaft head, the second main shaft head is provided with three circumferentially evenly distributed positioning claws, the positioning claws are driven to retract and expand by a cylinder, a torsion spring is provided between the second main shaft head and the mounting seat, and the second main shaft portion is parallel to the axis of the clamping jaw unit.

[0011] Preferably, the wire feeding assembly is further provided with a cutting unit, and the cutting unit is provided with a cutting cylinder and a cutter head, the cutting cylinder is mounted on a side of the fixing seat facing the positioning claw, and the cutter head is fixed to the telescopic end of the cutting cylinder.

[0012] Preferably, the clamping assembly is further provided with a support rod, a guide rod, a mounting plate, and a positioning cylinder; the fixed mold is fixed on a workbench, the support rod surrounds the fixed mold, the mounting plate is mounted on the support rod and is located at the upper part of the fixed mold, the positioning cylinder is fixed on the mounting plate, a guide rod slidably connected to the mounting plate is fixed to the upper part of the movable mold, and the output end of the positioning cylinder is connected to the upper end of the movable mold.

[0013] In summary, the technical solution of the present invention has at least the following beneficial effects:

[0014] Using tin wire as raw material for tinning operation abandons the method of using tin liquid in the prior art, which can effectively improve the tinning efficiency and reduce the waste of raw materials;

[0015] The feeding and supply of tin wire are all carried out automatically. After the tin wire is wound, it is tinned and fixed firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 is a top view of the present invention;

[0019] Figure 3 It is a front view of the tinning assembly and the wire feeding assembly of the present invention;

[0020] Figure 4 It is a top view of the tinning assembly and the wire feeding assembly structure of the present invention;

[0021] Figure 5 It is a front view of the mold clamping assembly structure of the present invention.

[0022] In the figure; 1. workbench; 2. fixed mold; 3. movable mold; 4. clamping jaw unit; 5. roller; 6. screw rod; 7. guide rail; 8. first clamping part; 9. second clamping part; 10. idler wheel; 11. clamping wheel; 12. first spindle head; 13. second spindle head; 14. positioning claw; 15. support rod; 16. guide rod; 17. cutting cylinder; 18. tool head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides an automatic tinning device for pipe fittings based on tin wire, such as Figure 1-5As shown, it includes a workbench 1, on which are provided a mold clamping assembly, a wire feeding assembly and a tinning assembly. The mold clamping assembly is used to position and clamp the workpiece, the wire feeding assembly is used to transport the tin wire, and the tinning assembly is used to receive the tin wire and convert the tin wire into a tin wire ring before tinning the workpiece.

[0025] The clamping assembly is provided with a fixed mold 2, a movable mold 3, a support rod 15, a guide rod 16, a mounting plate, and a positioning cylinder. The fixed mold 2 is fixed on the workbench 1, the support rod 15 surrounds the fixed mold 2, the mounting plate is mounted on the support rod 15 and is located at the upper part of the fixed mold 2, the positioning cylinder is fixed on the mounting plate, the upper part of the movable mold 3 is fixed with a guide rod 16 slidably connected to the mounting plate, and the output end of the positioning cylinder is connected to the upper end of the movable mold 3; a clamping groove for positioning the workpiece is provided at the upper end of the fixed mold 2 and the lower end of the movable mold 3, so that the workpiece is placed in the clamping groove and is positioned and fixed under the action of the fixed mold 2 and the movable mold 3 clamping each other.

[0026] The wire feeding assembly and the tinning assembly are used in combination, and the two are arranged on one side of the fixed mold 2, wherein the wire feeding assembly is provided with a wire feeding part and a wire winding and cutting part, the wire feeding part is provided with a servo motor, a roller 5, a screw rod 6, a guide rail 7, a wire feeding wheel group, a first clamping part 8, and a second clamping part 9, the roller 5, the servo motor, the guide rail 7 and the wire feeding wheel group are all installed on the workbench 1, the first clamping part is slidably connected to the guide rail 7, the output end of the servo motor is connected to the screw rod 6, and the other end of the screw rod 6 is rotatably connected to the first clamping part 8, the screw rod 6 rotates to drive the first clamping part to slide along the guide rail 7, the second clamping part 9 is arranged parallel to the first clamping part 8 and is fixed on the workbench 1 at the end of the guide rail 7, the roller 5 is wound with tin wire, and the free end of the tin wire passes through the wire feeding wheel group, the first clamping part 8 and the second clamping part 9 in sequence. The first clamping part 8 is provided with a sliding seat, a cylinder, a guide block, and a clamping head; the sliding seat is installed on the guide rail 7, the guide block is arranged along the conveying direction of the tin wire, the guide block is provided with a guide groove for passing the tin wire, and the clamping head is installed at the telescopic end of the cylinder and can be inserted into the guide groove; the second clamping part 9 is provided with a fixed seat, a cylinder, a guide block, and a clamping head; the guide block is fixed on the fixed seat, the guide block is provided with a guide groove, and the clamping head is connected to the telescopic end of the cylinder and can be inserted into the guide groove. In this way, during specific work, the free end of the tin wire passes through the wire feeding wheel group, the first clamping part 8 and the second clamping part 9 in sequence, wherein the clamping or loosening of the tin wire by the first clamping part 8 and the second clamping part 9 is automatically controlled by the electronic control system, and the wire feeding wheel group is provided with an idler wheel 10 and a clamping wheel 11. There are two clamping wheels 11 and the outer edge surfaces of the two clamping wheels 11 are arranged in close contact. Wheel grooves for passing the tin wire are provided on the outer side walls of the two clamping wheels 11, and the center line of the wheel groove after the two clamping wheels 11 are connected is tangent to the idler wheel 10. During specific work, the tin wire needs to be transported automatically. In the present application, the power for transporting the tin wire is realized by the first clamping part 8. Specifically, after the current section of tin wire is used up, the first clamping part 8 releases the tin wire, and the second clamping part 9 continues to clamp it. The slide seat of the first clamping part 8 can slide along the guide rail 7. The power for the sliding of the slide seat can be achieved by a cylinder (at this time, the telescopic end of the cylinder can be connected to the slider), or a motor cooperates with the structure of the lead screw (at this time, a ball screw structure is formed between the lead screw 6 and the slide seat). After the slide seat slides to a position close to the roller 5, the tin wire is clamped, and then the second clamping part 9 releases the tin wire, forming a state where only the first clamping part 8 is clamped. Thereafter, under the action of the drive, the first clamping part 8 moves along the guide rail 7 to the second clamping part 9, thereby driving the transportation of the tin wire.

[0027] The tin wire delivered by the wire feeding assembly will be received by the tinning assembly, wherein the tinning assembly is provided with a clamping jaw unit 4, a first driving unit, a second driving unit and a third driving unit. In actual use, the first driving unit adopts a servo motor, the second driving unit adopts a servo motor or an AC motor, and the third driving unit adopts a cylinder. The clamping jaw unit 4 is provided with three clamping jaws evenly distributed around the circumference; the first driving unit drives the clamping jaw unit 4 to move axially, the second driving unit drives the clamping jaw unit 4 to rotate, and the third driving unit drives the clamping jaws in the clamping jaw unit 4 to synchronously contract or expand radially, and the wire feeding direction of the wire feeding assembly is perpendicular to the axis of the clamping jaw unit 4. The tinning assembly is provided with a first spindle portion, the first spindle portion is provided with a first spindle head 12 and a spindle cylinder, the spindle cylinder is installed on the first spindle head 12, and a clamping jaw unit 4 coaxial with the spindle cylinder is installed in the spindle cylinder, one end of the clamping jaw unit 4 is provided with a cylinder for controlling the contraction or expansion of the clamping jaw, and the tinning assembly is also provided with a translation motion component, and the movement direction of the translation motion component is parallel to the wire feeding direction. The wire feeding assembly is also provided with a wire winding positioning unit; the wire winding positioning unit is provided with a second main shaft portion, the second main shaft portion is provided with a mounting seat, a second main shaft head 13, the second main shaft head 13 is provided with three circumferentially evenly distributed positioning claws 14, the positioning claws 14 are retracted and expanded by a cylinder drive, a torsion spring is provided between the second main shaft head 13 and the mounting seat, and the second main shaft portion is parallel to the axis of the clamping jaw unit 4.

[0028] When the tinning assembly needs to receive tin wire, the first spindle head 12 first drives the clamping jaw unit 4 to move to a position colinear with the axis of the second spindle portion, and then extends the clamping jaw 4 into the positioning claw 14 through axial movement. At this time, the tin wire is located between the positioning claw 14 and the clamping jaw. The positioning claw 14 moves synchronously to press the tin wire against the clamping jaw, and the tin wire is wound around the clamping jaw through the rotation of the first spindle portion. During the winding process, the positioning claw 14 acts as a limiter.

[0029] Since the tin wire needs to be cut after being wound on the clamping jaw unit 4, the wire feeding assembly is also provided with a cutting unit, which is provided with a cutting cylinder 17 and a cutter head 18. The cutting cylinder 17 is installed on the side of the fixed seat facing the positioning claw 14, and the cutter head 18 is fixed to the telescopic end of the cutting cylinder 17. After the tin wire is wound, the cutter head 18 cuts off the tin wire to complete a wire feeding operation. When the tin wire is wound on the clamping jaw unit, the clamping jaw unit will extend into the pipe mouth of the workpiece, and then the three clamps will be opened under the action of the third tinning drive, so that the tin wire ring is separated from the clamping jaw and placed in the groove of the inner wall of the pipe that has been processed by the rolling groove component, and a tinning action is completed at this time.

[0030] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic tinning device for pipe fittings based on tin wire, comprising a workbench (1), characterized in that: The workbench (1) is provided with a mold clamping assembly, a wire feeding assembly and a tinning assembly. The mold clamping assembly is provided with a fixed mold (2) and a movable mold (3). At least one side of the fixed mold (2) is provided with a wire feeding assembly and a tinning assembly. Each tinning assembly is equipped with a set of wire feeding assemblies. The tinning assembly is provided with a clamping jaw unit (4), a first drive unit, a second drive unit and a third drive unit. The clamping jaw unit (4) is provided with three circumferentially evenly distributed clamping jaws. The first drive unit drives the clamping jaw unit (4) to move axially, the second drive unit drives the clamping jaw unit (4) to rotate, and the third drive unit drives the clamping jaws in the clamping jaw unit (4) to synchronously contract or expand radially. The wire feeding assembly supplies tin wire to the clamping jaw unit (4). The wire feeding direction of the wire feeding assembly is perpendicular to the axis of the clamping jaw unit (4). The wire feeding assembly is provided with a wire feeding direction. The wire feeding part and the wire winding and cutting part are provided with a servo motor, a roller (5), a screw rod (6), a guide rail (7), a wire feeding wheel group, a first clamping part (8), and a second clamping part (9). The roller (5), the servo motor, the guide rail (7), and the wire feeding wheel group are all installed on a workbench (1). The first clamping part (8) is slidably connected to the guide rail (7). The output end of the servo motor is connected to the screw rod (6). The other end of the screw rod (6) is rotationally connected to the first clamping part (8). The screw rod (6) rotates to drive the first clamping part (8) to slide along the guide rail (7). The second clamping part (9) is arranged in parallel with the first clamping part (8) and is fixed on the workbench (1) located at the end of the guide rail (7). Tin wire is wound around the roller (5). The free end of the tin wire passes through the wire feeding wheel group, the first clamping part (8), and the second clamping part (9) in sequence. The first clamping part (8) is provided with a sliding seat, a cylinder, a guide block, and a clamping head; the sliding seat is installed on the guide rail (7), the guide block is arranged along the conveying direction of the tin wire, the guide block is provided with a guide groove for passing the tin wire, and the clamping head is installed at the telescopic end of the cylinder and can be inserted into the guide groove; the second clamping part (9) is provided with a fixed seat, a cylinder, a guide block, and a clamping head; the guide block is fixed on the fixed seat, the guide block is provided with a guide groove, and the clamping head is connected to the telescopic end of the cylinder and can be inserted into the guide groove.

2. The automatic tinning device for pipes based on tin wire according to claim 1 is characterized in that: The wire feeding wheel assembly is provided with an idler wheel (10) and a clamping wheel (11). The number of the clamping wheels (11) is two and the outer edge surfaces of the two clamping wheels (11) are arranged in close contact. The outer side walls of the two clamping wheels (11) are provided with a wheel groove for passing the tin wire. The center line of the wheel groove after the two clamping wheels (11) are connected is tangent to the idler wheel (10).

3. The automatic tinning device for pipes based on tin wire according to claim 1 is characterized in that: The first driving part adopts a servo motor, or the second driving part adopts a servo motor or an AC motor, or the third driving part adopts a cylinder.

4. The automatic tinning device for pipes based on tin wire according to claim 3 is characterized in that: The tinning assembly is provided with a first spindle portion, the first spindle portion is provided with a first spindle head (12) and a spindle cylinder, a clamping unit (4) coaxial with the spindle cylinder is installed in the spindle cylinder, one end of the clamping unit (4) is provided with a cylinder for controlling the retraction or expansion of the clamping jaw, and the tinning assembly is also provided with a translation motion assembly, the movement direction of the translation motion assembly is parallel to the wire feeding direction.

5. The automatic tinning device for pipes based on tin wire according to claim 1 is characterized in that: The wire feeding assembly is also provided with a wire winding positioning unit; the wire winding positioning unit is provided with a second main shaft portion, the second main shaft portion is provided with a mounting seat and a second main shaft head (13), the second main shaft head (13) is provided with three circumferentially evenly distributed positioning claws (14), the positioning claws (14) are retracted and expanded by a cylinder drive, a torsion spring is provided between the second main shaft head (13) and the mounting seat, and the second main shaft portion is parallel to the axis of the clamping jaw unit (4).

6. The automatic tinning device for pipes based on tin wire according to claim 5 is characterized in that: The wire feeding assembly is also provided with a cutting unit, which is provided with a cutting cylinder and a cutter head. The cutting cylinder is installed on a side of a fixing seat facing the positioning claw (14), and the cutter head is fixed on the telescopic end of the cutting cylinder.

7. The automatic tinning device for pipes based on tin wire according to claim 1 is characterized in that: The clamping assembly is also provided with a support rod (15), a guide rod (16), a mounting plate, and a positioning cylinder. The fixed mold (2) is fixed on the workbench (1), the support rod (15) surrounds the fixed mold (2), the mounting plate is mounted on the support rod (15) and is located on the upper part of the fixed mold (2), the positioning cylinder is fixed on the mounting plate, the upper part of the movable mold (3) is fixed with a guide rod (16) slidably connected to the mounting plate, and the output end of the positioning cylinder is connected to the upper end of the movable mold (3).

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